Learn about Webel's comprehensive SysMLv2 Workshop Seminar course!
VIDEO: The Webel SysMLv2/MBSE course has landed! Take a quick tour!
Webel now has a SysMLv2 Online Self-Study course with self-test Quizzes!

A calculation definition specifies a reusable computation that returns a result in the result parameter.

Icon class
icon_class
fas fa-quote-left
icon_class_computed
fas fa-quote-left
Related content
30. Calculations: Calculation Definitions.sysml
SysMLv2: Cameo: Although you can use return in SysMLv2 code for the out parameter of a calculation it will display as an out in the parameters compartment. Note that the special parameter is called 'result' but the code keyword is return and it's an out.
SysMLv2: Cameo: The special result parameter of a calculation (which is an out parameter) won't display as a parameter symbol on its owner's symbol boundary but you can still list it in the parameters compartment (it will appear as an out)
30. Calculations: Calculation Usages-1.sysml
30. Calculations: Calculation Usages-2.sysml
Source
OMG Systems Modeling Language TM (SysML®) Version 2.0 formal/2025-09-03 (Sep 2025)
Copyright information
About Object Management Group copyright in text extracts quoted from OMG specifications for educational purposes
Snippet kind
INFO
A calculation definition is a kind of action definition ... that has a distinguished parameter with direction out called the result parameter (which is usually the only out parameter).
Full quote
A calculation definition specifies a reusable computation that returns a result in the result parameter.
Next snippet
A calculation usage is an action usage that is a usage of a calculation definition.
Related snippets
Related snippets (backlinks)
In addition, the result parameter for a calculation definition or usage can be declared as an out parameter using the keyword return instead of out. Note that a calculation definition or usage always has a result parameter, inherited if not owned.
Visit also
Visit also (backlinks)